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Long-term variation in, and effects of fertiliser addition on, flower, fruit and seed production in the tree Sorbus aucuparia (Rosaceae) |
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| Authors: | Ulf Sperens |
| Affiliation: | U Sperens, Dept of Ecological Botany, UmeåUnit, S-901 87 Umeå, Sweden (sperens@ekhot umu se) |
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